Seven Minute Frosting - cooking recipe

Ingredients

2 egg whites
1 1/2 c. sugar
1/2 c. water
1/4 tsp. cream of tartar
1 1/2 tsp. vanilla extract

Preparation

Put egg whites, sugar, water and cream of tartar in the top part of a double boiler over boiling water.
Beat with electric beater at high speed until mixture is thick and creamy, about 8 minutes.
Remove from heat and continue beating until very smooth and glossy.
Add vanilla and beat again to blend.
Spread on cake. Enough for tops and sides of an 8-inch or 9-inch 2-layer cake. Must be prepared just before cake is ready to be frosted.